Heater test

To test the operation of the ventilation unit heaters:

  1. Select Service menu.
  2. Activate the test mode by pressing the On/Off button in the right top corner of the Test mode area until the value is On:
  3. To test the operation of the heaters in the Post-heating resistor area:
  4. To test the operation of the post-heater, press the On/Off button next to the text Post-heating resistor.
  5. To test the operation of the defrosting resistor, first press the On/Off button next to the Additional heating resistor text and then measure the output or observe the temperature of the defrosting resistor.